There is a more complicated solution for the general cubic equation[1] and quartic equation.[2] The Abel-Ruffini theorem[3]:211 states that the general quintic equation does not have an algebraic solution. This means that the general polynomial equation of degree n, for n ≥ 5, cannot be solved by using algebra. However, under certain conditions, we can get algebraic solutions; for example, the equation x10=a{\displaystyle x^{10}=a} can be solved as x=a1/10.{\displaystyle x=a^{1/10}.}